#VU78481 Permissions, Privileges, and Access Controls in apiserver - CVE-2023-1260

Vulnerability identifier: #VU78481

Vulnerability risk: Low

CVSSv4.0: 0.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-1260

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
apiserver
Web applications / Other software

Vendor: Kubernetes

Description

The vulnerability allows a remote user to escalate privileges within the application.

The vulnerability exists due to improper access restrictions within kube-apiserver. A remote authenticated user with "update, patch" permissions to the "pods/ephemeralcontainers" subresource can bypass SCC admission restrictions and gain control over a privileged pod.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

apiserver: All versions

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External links
https://bugzilla.redhat.com/show_bug.cgi?id=2176267

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.